Method of reproducing templets or patterns



Much' 25, 1947- J. T. BARNES Erm. 2,413,007

muon or nraonuqxa :mms on nrgms Filedpril A14, 1942 4 2 Shoots-Shut 1 dl l n I d4 Josvam'T. BARNES 8| du y i .Wauu A. Comms y mgm; Fue. 4

wenn nmrf m'omen 1547 .1.1. Ames am; 2,418,007 I muon o? knronucxua fwms on Ananas JOSEPH T. 8mm B1 WsLum A. CoLLme I INVENTOR.

YBY

. man @new Aromlev umts' STATE Patented Mes., 25, 154,7 f

' 'ideeen einem" una william" coins-.

bus, Ohio'. ithorlto Gilfl'tit-Vih'ightvorpo-` ration, acorporationo! The present invention relates lto.imp'i'oveinen'ts in reproduction processes and more particularly. toimproved methods and means tor reproducing identicaltemplets or patterns from In manufacturing-processes. particularly inthe of these require a multiplicinass productionoiaircraft, it isirequently' necity oi.. and the production oi essary to reproduce-accurately. economically and' nesatives-andreversedfpatternswhich cannot be quickly. layouts; instructions end other indicia" utilized inv ca for fabrication into the liirom master or templetsupon .duplicate l10 nal templet or' r; These;l prior processes have an original.

have .th disadvantage Lum require extremely ac 'icurate long roeal length lenses of an expensive-nature electric or other illuminatempiets to be'iiseciin producing the -nnished' i'.- or .upon the sheet'istock'or other material which is to be fabricated into the nnisned pare In the:

1 z design and constructionoiaircraitthe parte oi '.-:-the airplane,` the basic section and contour determining-theexternal covering or skin for the "r' iuselaze. and other -iaired portions are usually outz'to .full scale upon a Sinsle .'-=tionoisumcient intensity to produce line and ac- `also beenfobjectiona'hledoI-not-'lend themselves yreiiciily-ft; pj-. euiiicier itgly accurate and rapid -productionfctz' duplicate temples. mais certain instances the accuracy is impaired by the necessity oi transferring .the drawings from one .type 0f material v to `other -havihgidinerentoof r The presentfinv large prepared surface auch as the door of a mold lines are then added the structural layouts and ed tothe satisiactlonof all concerned that the .1 various partei upon. large metal .sheets whichare pulledand inexpensive'A method for producins or layout'loit.` .To these basic section or contourv 20 both accurately and rapidly i 'any -nun'iber oi identical dimlice-,ee .with a minimum number oi design details which are based upon preliminary process stepegand which utilizes readil obtainsketches obtained trom the designers and stress "Table materialiffriefiy the presen method engineers. When iinally corrected and complet-l an-entirely.meehanical process com the preparation-oi @in oriainal sheet into vwhich is inscribed the drawing or that portion ortho orizj inni loiclayoutiorwhichfduplicate 'plete are desired. This original'sheetmayor'm ynotbe' `initially coetedand when properly scribed belines are iaired properly and the relationship ci all parte are right.` the full scale loft layout-isdnplicated in. complete detail and assembly oi the' knownas .thd'originai or master temp1ets. 1 :d comesl thexmaster templet which is then inked .The indicia-shown upon eeen meer lover suor. inserisce withxtheexeeptipn of. the

v.j-imusenfipiet. These' methods include 'variations Y .oi :substantially ailfoi. the'knownm'ethods ci duf pli'cation or reproduction includingf l photo@- [lnscribed depressions.- An impression' oi' the t'inkedsurface; is then transierred to a rubber oli-' set blanket carried upon a cylinder which may be mounted on a'printer'sor lithosraphers' prooi #press and the 'blanket then rolled and impressed upon a sheet forming the duplicate tempiet.

` which may preferably be coated with a color congraphic. photographic projection, photographic V contact and'photo-reflex. X-ray methods-electro1'yticprocesses; aswell as the tedious and timeconsuming hand methodof laying out and scriblng on each individual sheet the drawing and informationzwhich i's'copied from thamaster tempiet. While many of these processes are relativetrusting with 'that of. the inked Aiiripression.v B y o resinkmg the original tempiet and similarly oirset. transferring the impression to coated tempiet sheets any desired number of duplicate templets 'may be obtaincdeach being identical with the original and with each other. The present meth- 5 od and equipment also lends itself to the reproly economical as compared to the prior hand scribing methods they each require expensive equipment and material for their use and most of these prior photographic processes additionally have the undesirable requirement of a relatively large dark-room with its developing tanks and other photographic processing equipment.

duction oi positively registering duplicate templets in which a drilled master templet serves as a drill jig for insuring the accurate registration oi the holes in relation to the scribed lines 50 on the duplicate templets. By applying ink to the scribed indicia di the master templet a deeper impression can be taken and transferred to traclng cloth or paper for the making of blueprints.

Accordingly it is a major object of the present Certain of these prior photographic methods also 55 invent-.ion to provide a simple and economical out the present invention;

process. utilizing readily available materials and equipment, for the rapid and accurate reproduc l particularly adapted -for the :mass produmon tion of templets from an original templet or metal layout. It is also an object to reproduce such templets by Ameans of an entirely mechanica1'\ process which eliminates all photographic and other similar steps. Another object lies in a method whereby the outline of a master templet longer than the normal capacity of the presa may be transferred to a copy templet.

lIt is a further object of this invention to pro'-l vide a reproduction process in which no special training of the personnel is required nor the use of any special tools or equipment. A further object resides in theprovision of a system which readily permits obliteration of any undesired" pai't of the original by inking over that portion of the copy templet and subsequently making the desired corrections or revisions by scrtbing through the inked portion. A still further ob ject resides in the provision of a reproduction system 1 which readily Permits the transfer of an impression from a templet to tracing cloth of metal templets. As a modification 'of these systems, and more particularly a. method which is sulted'to the match grid and pin systems, there is shown in Figs. 6 to 9 inclusive an arrangement whereby extra long master templets can be i'e-V produced as copy-temD1ets.

Referring now to Fig. 1 there isv indicated by.

the numeral l la portion of a hand-operated proof press which can readily be utilized in connection .with the present invention. This proof press l0 can be one of the suitable types which are provided with a cylinder Il having an atthe novel manner in which it is usedin the fol-- tached handle l2 for manual operation back and forth over the bed vI3 of the press. side of the bed Il there are provided parallel racks I4 suitably engaged by spur gears I8 carriedat eachend of the cylinder Il. At each side of the bed of the press and preferably disposed beneath the racks Il there are provided parallel guides vi5 adapted to be closely engaged by rollers I1 carried upon the cylinder carriage I8. The equipment which has just beendescribed is typical of that which is well known in the printing art and in itself does not form a novel part of the present invention except in lowing description.

. Referring now to Fig. 2 there is shown in perspective a master or original templet A on which there is shown a drawing or outline of a part which it is desired be reproduced in a num- Fig. 4 is a corresponding perspective view of an underlay block:

Fig. 5 is a detail sectional view showing the relative positioning of the master templet upon r the underlay; and

Figs. 6 to 9 inclusive show the progressive steps in reproducing outlines from master templets of greater length than the normal capacity of the bed of thepress.

'I'he improved methods and means comprising the present invention are capable of use with either the simple printers proof press of the fixed-bed hand-operated type, or with the handor power-operated lithographers prooi press having adjustable bed sections. Accordingly, we will describe methods or systems which are adapted for each type of press. as well as systems which are suited to different needs or requirements. These methods fall broadly into two general groups, namely that in which the templets are provided with matching holes through the actual plates with which the layout has to register perfectly and that group in which the holes. if any, are indicated only on the surface of the templets along with the layout. The systems relating to the matched hole templets comprise essentially the three modified methods which we more particularly prefer to designate as follows: (I) The lead underlay system for use primarily with simple fixed-bed proof presses (in which the bed of the machine is usually .918 inch below the pitch line. or the actual contact line); (II) the match grid system adapted for use on the grid sections of the bed of a lithographers proof press; and (III) the match pin system, also for use with lithographers proof presses in which each of the adjustable beds are provided with matched pins. The latter system is the preferred form of our invention as more ber of'duplicates or prototypes. The drawing indicated on the master templet A has, been se- A'lected merely to explain the present invention and the arrangement of the lines in this ligure are typical of any templet and it will be understood by those skilled in the art that it is possible to take many different forms and appear-A ances, all of which are readily accommodated for reproduction by the present invention. The part indicated in the master templet is shown as of triangular shape being provided with four drilled holes, oi, a2, a3 and al which it is desired be accurately located with respect to the edges a6, a8, a1 and a8 as well as the other indicia outlined on the templet. In this templet A, which has been selected for explanatory purposes only, there is also shown an elliptical hole a9, an irregular peripheral recess alii in the edge al` as well as dotted construction lines all and all which indicate the assembly position of adjacent parts or structure.

The master templet A is preferably formed from a metal sheet, either steel, aluminum. or an aluminum alloy. or other material, depending upon the extent to which it will be used or the material of the ultimate part which will be made from it. Commercial .sheet material is not of uniformly perfect surface to permit accurate metal-to-metal contact printing due to the slight surface defects which appear on the commercial sheet iron and like materials-which are frequently used as templet stock. However, we have found that by carrying a .010 inch impression the oiIset blanket absorbs these small surface irregularities, which accounts for those of the same magnitude without any material considerations. The master templet A is provided with a, base coat Il (Fig. 5) of lacquer or enamel which is preferably of dark green, brown or black of a dead4 flat finish primarily to obtain contrast and to reduce eye strain of layout personnel. The drawing is then scribed with a sharp pointed tool through the surface coating I9 to form the fine lines 20 on the At either other light coating upon which the drawing placed inthepcsi lon of the cylinder. T he 4 with ar'ubber offset' blanket B of a width and ably supportedin a well known manner.

Y cylinder is thenpreferably moved into 'its extreme. position wise direction over the there is indicated a sheet or templet press and for reproducing templets in which the holes are either sented upon er dnued through be. is ilrst providedwith a coating or lacquer or enamel which is applied either by spraying, whirling. brushing or other suitable methods and which of the'ink which is to process. This base coat to obtain acontrast background, although printing upon the base metal is entirely satisfactory and The black ink duplicate the lines of the outline to burn or peel during sanding, cutting and filing operations.- In an alternative procedure the be prepared by rolling thereupon a base coat of ink and then dising a contrasting color of lnk in the duplicating process.

net us new assume that it is desired te repreduce the master templet A upon one or more copy templets C, each templet having been'preparcd I es described above. and m which it 1s net required that the holes al to a4 `inclusive in each templet be drilled and registered with each other prie te the dupueationgef' the remainder er the drawing of the master templet. Referring again to Fig. i, the master templet A'is suitably supported upon the Vbed I3 of the press as' shown to theleft oi the cylinder II and the copy templet lsto be duplicated is press cylinder is provided length to cover the 4cylinder upon which it is suit- The to the lef-t of the templet A. Printer's ink is then rolled onto the surface of the templet A by using a hand brayer or an automatic inking device which spreads the ink thinly over the templet while leaving the scribed lines of the drawing free o! ink. The cylinder II is then rotated by means of the handle I2 in a clockiorm or templet A with Just enoughlmpression so as from the surface of the templet.

Continued rotation of the cylinder in a clockwise direction causes the rubber blanket B which still holds the ink which has been picked up from the templet A to be rolled over upon the blank sheetoi metal C, thus giving a duplicate of the original templet. This process can be repeated as many times as desired merely'by substituting new blank m'etal sheets at C master templet A before taking each impression. It will be found that the duplications of the original drawing are extremely accurate and that the lines are as n ne or frequently finer than the scribed lines on the master templet itself. Where extremely accurate-reproductions are required a good precision proof press must be used and the lines on such a press plate when taken parallel to the axis of the blanket cylinder may be reinked many times and each time they will transfer the printed line to the copy templet C without any noticeable thickening of the line on the copy templet. The above mentioned method is entirely satisfactory for use with the simple proof copy vtemplet C can first indicated at C to the right should be of a color which will contrast with that be used in the duplicating is preferably a white or u.

is preferred by some. on bare metal 'has the' advantage that there is no lacquer or enamel. at

' match drilled with the :drilled easily. of

the master templet but in which these holes are not required to be of match drilled accuracy in the copy templets.

When it is desired that the duplicate blank be master templet and then reproduced with the outline drawing with positive register vbetween the drilled /holes and the lines of the templet, either of the following procedures maybe used:

I. The lead underlay system- The master templet A is placed upon the underlay D which is preferably a lead block to permit its being a suitable thickness such that the top of the contact dropped into the drilled holes in the underlay block, the pins being substantially the same size as the holes to provide a close sliding fit and being of a length such that they project into but do not quite extend to the upper surface of :..the master templet A when it is superimposed upon and matched clearly with the underlay D, as more shown in the enlarged detail in Fig. 5. The desired number coating, as decribed above, and the first of these blanktemplets is'drilled with the four holes cI to cl inclusive using the master templet A as the drill iig. With the cylinder II preferably in its central position as indicated in llig. 1, the

y underlay D is placed upon the bed lI3 of the press `in the position where it supports the templet A as shown in Fig. 1. The master templet A is then placed upon the underlay D such that the pins dII to du match and project partially into. the holes aI to al inclusive and the bed of the press is suitably adjusted such that when the cylinder II is passed .over the master templet A the correct degree of impression is taken. The

. master templet" A is then prepared with printer's to pick up the lnk and re-inking the oii'set lnk b y rolling the same thereon by means of a hand brayer or other suitable inking device which again covers the surface of the templet but leaves the scribed lines free of ink. The templet A is now removed from the machine and the blank sheet C in which theA holes cI to c4 have already been drilled using the templet A as a guide, is substituted in its place, being superimposed over the lunderlay D and having its holes matched with the pins dll to dll. The cylinder is again rotated into its position where the rubber blanket B, which still holds the ink that had been picked up, is then rolled over the blank sheet of metal C, thus giving a duplicate of the original templet. This procedure may be reg peated as many times as required to produce the desired number of duplicate templets and the method insures positive duplication of the locating holes due to the fact that they were matched drilled through each copy templet using the master templet as the drill jig. The lead underlay method can, of course, also be used if necessary wth the lithographers proof press.

II. The match grid system-Jn this method two plates of, say 3/16 inch thick steel are prepared and match drilled together, preferably on about one inch centers such that these plates are for all practical purposes identical one to the line is brought up to the j pitch line of the printers proof press. Using the master templet A as a t oi duplicate templetv blanks C are then prepared with or without suitable grid, and when it is in theproper position it is then securely fastened with pins', screws, or other suitable means through holes which have been located on predetermined centers. In operation a jig bar, drilled on these same centers,

is used to drill matched holes into .both the templet and the blank stock together either before, or after, the blank has been drilled from the master templet. By matching holes, the master templet is pinned to the work bed and the blank is similarly pinned to the corresponding holes on the reproduction bed. I'he master templet isthen inked. and an impression taken therefrom and onset printed upon the duplicate in the same manner as described above for the transfer oi the impression from the master templet to the printed duplicate. In a variation of the same general method, a composition known to the trade as Booth Zinc Cut Cement, or a type of double gummed tape such as Scotch Tape or "Plate Tak" can be used to advantage to make the master templet or the duplicate stock adhere to and register with the bed of the 'press if itv is desired to dispense' with the use of pins during the printing process.

III. The match pin system-This method is also adapted for use with thelithographers proof press and is the method recommended particularly where relatively large quantities oi' templets are required to be reproduced rapidly and accurately for mass production purposes. Referring nqw to Fig. 6, let us assume that numeral il vdesignates a lithographer's proof press, being provided with an adjustable work bed IIL and a similarly adiustable reproduction bed ISR. Each of these bed portions. are provided with spaced rows of holes into which the matched pins bil, bil, bil and bil may be set in an identical relationshlp to those in the other bed, and symmetrically arranged with respect to the adjacent bed portion. Corresponding holes are then jig-drilled into a blank sheet of stock to match the pins bil, bil, etc., which have been set into and in proper relation with each bed of the lithographers prooi press. .Onto one such blank sheet the master templets are attached by means of double-faced tape or other suitable adhesive. After having been so mounted, the blank sheets of metal, which are to be printed in the reproduction process, are stacked under the sheet to which the master templets are now drilled through the underlying stacked sheets, or in other words, they are stacked drilled. It will now be apparent that all the holes are thus drilled in proper relation to the master templet. The sheet with the master tempiet A is now placed on the press over the master pins bi3 and bil on the work bed ISLf and the sheets that are to become the copy templets C are placed on one at a time over the pins bi! and bit on the reproduction bed ISR of the press. It will be understood that the templets A and C are of sizes which nt within each of the beds I3R and ISL and are not of the excessive size of the master templet AA which is shown in Fig. 8, and that the press and pin arrangement of this iigure is referred to only for explanatory purposes.

nauw

The line is then-applied to the' masterset, the impression taken and oifset to thecopy sheet of metal in very much the same fashion as described for the'4 above methods. The present method, as has been indicated above, has been found to be the most satisfactory when mass production is required.

When it is required to reproduce a layout from a master templet -which is longer than the length oi either bed of the lithographer's prooi press, the system which is indicated in Figs. 6 to 9 inclusive ofthe drawings may be used. For the purposes of this method let us assume that the press il is a lithographer's proof press, being provided with a suitable rubber cylindrical blanket B and a handle I2 for rotating the same. The press is provided with a work bed ISL and a reproduction bed ISP.. In Fig. 6 there is shown placed across both beds of the press a master templet AA which is much greater in length than that of either of the press beds. Each bed of the press is provided with spaced rows of pin holes into which the match pins bI3, bil, bili and bIB may be closely iltted. Preferably' the distance between the rows of pins bi3 and bil in the work bed are spaced apart a distance which is equal to that between the adjacent rows of pins bil and bil as measured across the intermediate portion of the press between the two beds. From a lig or other templet which is matched with the pin holes in the press, corresponding rows of holes are drilled in the master templet AA. these rows of holes being ali, ail, aIB and aIB, such that when the master templet AA is placed upon the press it registers with the pins bi3 to bitinclusive, the pins not quite reaching to the working surface of the templet. The blank sheets CC upon which the master templet outline is to be reproduced, is similarly drilled either from the master Jig or the master templet, such that it is also provided with the matched rows of holes cI3, cil. cii and cil. For the purposes of the present explanation the master templetAA is provided with an elliptical outline al1 and a pair of concentric circles ait which are both accurately'spaced as required by the layout with respect to the other indicia which may appear thereon, and with respect to the margins of the templet outline.

The method of reproducing the master templet, as shown in Figs. 6 to 9 inclusive is as follows: The master templet; AA is rst placed with its holes ai3 to aI in registry with the corresponding pins bi3 to bl8 as shown in Fig. 6, the master templet being of such length that it extends substantially across both beds ISL and IIR of the press. The right hand portion Ar of the master templet is then inked and the roller with its blanket B rolled thereupon'to pick up the impression. As shown in Fig. 7 the copy templet stock CC which has previously been match drilled is now placed in registry with the corresponding sets of pins bil to biB inclusive extending up into the holes ci3 to ci 6 of the copy sheet, bringing the latter into proper registry. .The roller B is then rolled over the copy templet and the right hand portion of the layout transferred thereto as indicated at Cr and cI'I. The master templet AA is then replaced upon the press iii, but this time its row of holes als is matched with the second row of pins bil in the work bed I3L, such that its second row of holes ail matches the third row of pins bi5, its third row of holes ai matches the last row of pins bi6 in the bed I3R. The last row of holes aIG in the master templet AA may anaoov project beyond the right hand bd e ISRof the press as indicated in Fig. 8. After the rubber blanket B has been washed or cleaned of any remaining ink from the previous pffset operation, the intermediate or central portion Ac of the master templet AA is then suitably inked, an impression picked up by rolling the blanket B y thereupon and returning the same to its end position, as shown in Fig. 8. The copy templet CC is then placed upon the pins of the press in the same position as that last occupied by the master templet AA, that is, one set of holes removed or displaced toward the right and -with its last row of holes extending beyond the right edge IBR of the press as shown in Fig. 9. After the copy templet has thus been placed in proper registry the blanket B on. the cylinder is then rotated l vellum copy 'similar to that made by ordinary drafting procedure. Additional infomation in the form of dash numbers, notes. bills of material, desirable corrections or additions to the drawing vitself can, therefore. be made upon the copy reproduced in the manner described. Should all the material necessary to produce a drawing be on the master templet, and should it therefore not be desirable or necessary to add further notes, changes or other information, the copy can be made under the same procedure as that used in reproducing a templet and a copy similar to a Van Dyke will be produced. In the event the simple proof -press is used. it will, of course., A-be 'necessary to provide an underlay under the". tracing paper. With the reproduction proof press 'i it is not necessary to have an underlay under the 1 across the central portion of the copy templet transferring its impression thereto, as indicated in Fig. 9 at C,c and cls. The last and final step in this process. in order to complete the transfer of the layout, is obtained by again setting the master templet'AA upon the bed of the press i0 such that its left row of holes all are matched with the third row of pins b| 5 The remainin master templet portion AI is then inked and the impression transferred by the rubber blanket to the corresponding portion of the copy templet.

' after the latter has been similarly -registered on 'in addition to the reproduction of metal templets, to produce a number of blueprints. Our improved reproduction process readily permits the printing of the master templet onto tracing paper or tracing cloth from which anyI desired number of blueprints or other prints may be reproduced. In order to print the original. templet upon a sheet of tracing paper the master templet A is placed on the bed of the press in the work position of the lithographers press. Printer's ink is then rolled onto the surface of the templet by the hand brayer or other inking device. This ink is then forced into the scribed lines by the use of a sharp edged tool and at the same time the maior portion of the ink is scraped from the surface of the templet. The excess ink remaining on the surface after the scraping operation is then blotted off by running the cylinder back and forth several times over the templet surface usingnews print for the blotting paper.

` tracing paper. The templet can be placed on bed; No. 1 or ISL in Fig. 6, and the tracing paper on' b ed No. 2 or ISR. The beds of such presses are both accurate and smooth enough for the tracing paper and they can be adjusted to proper pitch line.

It will accordingly be seen hthat by means of the above described methods extremely accurate templets can be obtained from a 'master templet without the necessity of any photographic steps in the process and directly in a positive pattern which is a true copy and is not reversed in any manner. These processes are basically mechanical in their nature and the equipment consists primarily 'of a printers proof press provided with a special rubber oiset blanket on its cylinder using the master templet or layout as the printing form. It is also shown that locating holes can be drilled from the master templet into thel blank This blotting of the excess ink does not pick up the ink in the scribed holes because this ink is below the surface of the templet. The necessary added impression is provided for the rubber blanket to pick up the ink in the scribed lines. below the surface ofthe templet. The cylinder I I upon which the rubber blanket is carried and has just been inked by virtue of this added impression. is then rolled over upon a sheet of tracing paper which is placed on the reproduction bed of the press. The inked lines are accordingly transferred to the tracing paper or cloth as the result of this operation. It should be noted that the above outlined procedure gives a tracing paper or and the master templet thereupon reproduced onto the blank with positive register between the drilled holes and the printed lines on the copy templet. This permits the use of the master templet as a drill iig for the duplicate templet insuring absoluteaccuracy oi' the location of the holes in relation one to the other and in relation to the scribed lines on the duplicate templet. It will be understood that any suitable material may be utilized for the .master templet and the drawing may be reproduced upon copy templets of the same or other material. Since both templets during the offset transfer process are under the same conditions and temperature, and such other conditions as humidity and the like which would aiect other materials, there is little possibility of variations in transferred images such as are met with in photographic processes where negatives are produced either upon glass or nlm and the the necessity of making separate templets to be used to transfer lines to each of these materials. It should also be noted that introduction of. this process will not disrupt or interfere with the basic processes of a loft or templet layout department. No additional training of loft layout personnel is required and neither will this personnel have to replace their tools or equipment as is necessary when other reproduction processes are used.

-processes are used,is first completed. If-the part is to be formed, the master templet can be reproduced on the. form block material and the fornil block can bemade therefrom. The master tempiet can then be reproduced on the actual stock from which the part is to be made and the part s can then be cut out and fabricated over the ionn block. Another advantage oi the present proc- 1 ess permits any portion of the duplicated or copy templet which is not actually wanted, to be -ob' over 'that portion of the copied templet. This permits additional layout to be added to the tempiet and has been fpund very .useful in-changing from one airplane model to another model of the same type.

Other forms and modincations of the present invention both wlthrespect to the general prov cedure'and equipment, or to the detailed steps or parts. which may become obvious to those skilled in the art after a reading of this description are al1 intended to come within the scope and spirit of the present invention as more particularly fined in the appended claims. We claim:

master templet by the use o! a lithographers proof press having adjustable work and .reproduction beds, the said press having identically disposed matched pin holes in each bed and matched pins within said holes, comprising and jig-drilling of a stack of copy templet blanks to match the said matched bed holes and the holes in the master templet, positioning of the master templet upon the pins of the work bed of the press, positioning a cops1 templet blank upon the matched pins of the reproduction bed of the press, inking the said master templet and transferring -Aan .impression from said inked master templet to each of said copy templet blanks. I

2. The method of reproducing a templet upon 12 a prooi press having adjustable work and reproduction beds, each of said beds having identically disposed matched pin holes and provided with pins inreach of s aid holes, the preparation of a blank sheet of stock by jig-drilling the same to match said bed holes, using said blank stock as a jig to drill the matched holes in said master templet, adhering said drilled blank sheetfto- 'a stack of copy templet blanks,jigdrilling said stack ofcopy templet blanks through said drilled `blank sheet, positioning said master templet upon the matched pins of the work b ed of the presa-,positioning each oi said drilled'copy templet blanks individually in registration upon thematched pin 5 literated by simply rolling the ink coated broyer 'l 30' 1. The method oi' reproducing a match drilled holesof said reproduction bed, and transferring an inked impression from said master templet. to each of said copy templet blanks.

JOSEPH T. BARNES. if

WnLIAM A. conmNs.-v-

RErnnnNoEs u l Y The following references are oi' `record-.in ggthe ille of this patent: 4 v A. UNrrED sTATEs 'Pamiers Number Name Date 282,168 C ogswell July 3l. 1883` 1,819,158 Aug. 18,1931

23,146 -x 1,490,414 Brogan 1- Ap'xl 15, 1924` 1,527,299 yHacker -"Eebn, 1 925 v 220,549- Rone'mous --'0ct. 14, 1879" 48,290 Larcher June 20, 1865 v 1,907,771 '1Ee1lnei";. May 9,1933v Re. 11,383 Hoke Sept. .5, 1893 2,321,046 Rudnick June 8, 194:3 1,025,495 Watkins May 7,1912 1,109,288 Heubner Sept. 1, 1940l 2,226,987 ,Wiegand Dec. 31,1940 2,092,979 I Lennox Sept. 14, 1937 1,976,152 l 'lhorntoltll 1.... Oct. .9, 1934 FQREIGN PATENTS v Number Country Date 484,153 antan Apr. 28,1938 

